Fix test name reporting when test is in a base class

[paulirwin]

Is there an existing issue for this?

• I have searched the existing issues

Task description

Context: #914 (comment)

From @NightOwl888:

we should have a new issue about fixing test reports so the correct superclass is reported for tests that are declared in a base class.

NUnit reports the name of the class that the [Test] attribute it finds is declared in. We need it to report the name of the top level superclass that inherited the class that the [Test] attribute is declared in, since we have tests in test fixture classes that are designed specifically to be inherited so standardized tests can be reused. Since several of these classes are in the test framework, this issue affects end users of the test framework as well as internally.

As a workaround, we currently override test methods, redefine the [Test] attribute on the superclass, and cascade the call to the base class. This gets NUnit to display the proper class name, but it obviously doesn't scale well.

Also see: #914 (comment)